UC1843B-SP

現行

100% 工作週期、抗輻射 QMLV、30V 輸入、1A 單輸出 500kHz PWM 控制器

產品詳細資料

Vin (max) (V) 25 Operating temperature range (°C) -55 to 125 Control mode Peak current mode, Voltage Topology Boost, Buck, Flyback, Forward Rating Space Duty cycle (max) (%) 100
Vin (max) (V) 25 Operating temperature range (°C) -55 to 125 Control mode Peak current mode, Voltage Topology Boost, Buck, Flyback, Forward Rating Space Duty cycle (max) (%) 100
CFP (HKU) 10 45.4896 mm² 7.02 x 6.48 DIESALE (KGD) See data sheet
  • QML class V (QMLV) qualified, SMD 5962-86704
  • 5962R8670412VYC:
    • Radiation hardness assurance (RHA) up to 100-krad(Si) total ionizing dose (TID)
  • Optimized for offline and DC-to-DC converters
  • Low start-up current (< 0.5 mA)
  • Trimmed oscillator discharge current
  • Automatic feed forward compensation
  • Pulse-by-pulse current limiting
  • Enhanced load response characteristics
  • Undervoltage lockout (UVLO) with hysteresis
  • Double-pulse suppression
  • High-current totem-pole output
  • Internally-trimmed bandgap reference
  • 500-kHz operation
  • Low RO error amplifier
  • QML class V (QMLV) qualified, SMD 5962-86704
  • 5962R8670412VYC:
    • Radiation hardness assurance (RHA) up to 100-krad(Si) total ionizing dose (TID)
  • Optimized for offline and DC-to-DC converters
  • Low start-up current (< 0.5 mA)
  • Trimmed oscillator discharge current
  • Automatic feed forward compensation
  • Pulse-by-pulse current limiting
  • Enhanced load response characteristics
  • Undervoltage lockout (UVLO) with hysteresis
  • Double-pulse suppression
  • High-current totem-pole output
  • Internally-trimmed bandgap reference
  • 500-kHz operation
  • Low RO error amplifier

The UC1843B-SP control IC is a radiation hardened pin-for-pin compatible version of the UC1843A-SP. Providing the necessary characteristics to control current-mode switched-mode power supplies, this device has improved features. Start-up current is specified to be less than 0.5 mA and oscillator discharge is trimmed to 8.3 mA. During UVLO, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.

The UC1843B-SP control IC is a radiation hardened pin-for-pin compatible version of the UC1843A-SP. Providing the necessary characteristics to control current-mode switched-mode power supplies, this device has improved features. Start-up current is specified to be less than 0.5 mA and oscillator discharge is trimmed to 8.3 mA. During UVLO, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.

下載 觀看有字幕稿的影片 影片

您可能會感興趣的類似產品

open-in-new 比較替代產品
功能相似於所比較的產品
TPS7H5001-SP 現行 具有同步整流的抗輻射、QMLV 和 QMLP 2-MHz 雙輸出 PWM 控制器 More feature rich QML-qualified radiation-hardened PWM controller family
TPS7H5005-SEP 現行 附帶同步整流的耐輻射、2-MHz、雙輸出 PWM 控制器 More feature rich radiation-tolerant PWM controller family for LEO or shorter duration missions

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件,然後再試一次。
檢視所有 15
類型 標題 日期
* Data sheet UC1843B-SP QML Class V, Radiation Hardened Current-Mode PWM Controller datasheet (Rev. B) PDF | HTML 2020年 12月 7日
* SMD UC1843B-SP SMD 5962-86704 2020年 5月 19日
* Radiation & reliability report Single-Event Effects Test Report of the UC1843B-SP Current Mode PWM Controller 2019年 8月 9日
* Radiation & reliability report UC1843B-SP Neutron Displacement Damage (NDD) Characterization 2019年 6月 28日
* Radiation & reliability report UC1843B-SP total ionizing dose (TID) radiation report 2019年 2月 28日
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. A) 2023年 8月 31日
Application note QML flow, its importance, and obtaining lot information (Rev. C) 2023年 8月 30日
Application note Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. A) PDF | HTML 2022年 11月 17日
Application note Single-Event Effects Confidence Interval Calculations (Rev. A) PDF | HTML 2022年 10月 19日
Selection guide TI Space Products (Rev. I) 2022年 3月 3日
Application brief Controlling Input Power for Present and Next-Generation Power Controllers PDF | HTML 2020年 12月 14日
Application note DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer 2020年 8月 21日
Application note Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form PDF | HTML 2020年 5月 18日
E-book Radiation Handbook for Electronics (Rev. A) 2019年 5月 21日
User guide UC1843B-SP evaluation module (EVM) user's guide 2019年 3月 29日

設計與開發

如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

UC1843BEVM-CVAL — UC1843B-SP 電流模式 PWM 控制器評估模組

The UC1843BEVM-CVAL uses the UC1843A-SP, INA901-SP, LM139AQML-SP, and UC1901-SP to create an isolated feedback flyback with current sensing and over current flags. The UC1843A-SP is used to switch the low side MOSFET of the flyback converter and provide voltage and current to the output. The (...)
使用指南: PDF
TI.com 無法提供
模擬型號

UC1843A-SP TINA-TI Transient Reference Design

SLUM674.TSC (6331 KB) - TINA-TI Reference Design
模擬型號

UC1843A-SP TINA-TI Transient Spice Model

SLUM675.ZIP (17 KB) - TINA-TI Spice Model
模擬型號

UC1843A-SP Unencrypted PSpice Transient Model

SLUM660.ZIP (3 KB) - PSpice Model
計算工具

SLUC691 UC1843B-SP Flyback Converter Calculator

支援產品和硬體

支援產品和硬體

產品
AC/DC 和 DC/DC 控制器 (外部 FET)
UC1843B-SP 100% 工作週期、抗輻射 QMLV、30V 輸入、1A 單輸出 500kHz PWM 控制器
參考設計

TIDA-070002 — 20 至 40 VIN、50-W 航太級隔離返馳式 DC/DC 過電流防護參考設計

Spacecraft bus voltages vary from the well-established 28-V to more than the 100-V typically used in highpower commercial communications satellites, this reference design shows an example for a space-grade 50-W isolated intermediary bus converter, while implementing over-current protection (OCP) (...)
Design guide: PDF
電路圖: PDF
封裝 引腳 下載
CFP (HKU) 10 檢視選項
DIESALE (KGD)

訂購與品質

內含資訊:
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 資格摘要
  • 進行中可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

內容係由 TI 和社群貢獻者依「現狀」提供,且不構成 TI 規範。檢視使用條款

若有關於品質、封裝或訂購 TI 產品的問題,請參閱 TI 支援。​​​​​​​​​​​​​​

影片